Currently it's possible to selectively overwrite fill types based on drafting / surface / cut fills in graphic overrides.
It's not possible for line types. All types of lines (drafting / cut / skin separator) will be overwritten. It would be very useful to be able to selectively overwrite these line types like for fills. An example application is if one want to have non-cut doors displayed in sections to have appear with thin light gray lines but cut doors appear with thin black lines. Currently this isn't possible without time consuming workarounds.
See image below how this feature could conceivably look like: